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Oval|Lab Grown|IGI

1.51ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG496102629

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG496102629

Diamond specifications and retailer prices

From $1,040 USD
As of November 6, 2026
Save $2,002 USD (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,629 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496102629 or 496102629. Listed at 13 retailers as of November 6, 2026, with a 193% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496102629
Dimensions9.16 × 6.45 × 4.05 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.16 mm6.45 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496102629
Side View
Table 55.0%Crown 34.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,629 USD|Low: $1,040 USD|High: $5,603 USD|Avg: $2,792 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,040 USD
Retailer 7$1,669 USD
Retailer 10$1,816 USD
Retailer 8$1,936 USD
Retailer 2$2,634 USD
Retailer 3$2,717 USD
Retailer 9$3,042 USD
Retailer 6$3,338 USD
NZ Jewellers$3,629 USD
Retailer 4$5,514 USD

46 data points across 10 retailers

13 retailers$1,040 USD to $3,042 USD

B+
Cheapest Retailer
-
$1,040 USD
B
Retailer 2
-
$1,669 USD
View
B
Retailer 3
-
$1,816 USD
View
B
Retailer 4
-
$1,869 USD
View
Final sale: no returns
Retailer 5
-
$1,936 USD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$1,936 USD
View
B
Retailer 7
-
$2,105 USD
View
B
Retailer 8
-
$2,634 USD
View
B
Retailer 9
-
$2,717 USD
View
B
Retailer 10
-
$3,042 USD
View
Retailer 11
-
$3,338 USD
View
Price under review
Most Expensive
NZ Jewellers
5e71dafc-8239-4e00-9580-461675dac5d6 · Nov 5
$3,629 USD
View
Price under review
11 more retailers have this diamond
Prices start from $1,040 USDSave up to $2,002 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Oval
$1,040 USD